JP3476216B2 - Deflection yoke - Google Patents
Deflection yokeInfo
- Publication number
- JP3476216B2 JP3476216B2 JP17864093A JP17864093A JP3476216B2 JP 3476216 B2 JP3476216 B2 JP 3476216B2 JP 17864093 A JP17864093 A JP 17864093A JP 17864093 A JP17864093 A JP 17864093A JP 3476216 B2 JP3476216 B2 JP 3476216B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- magnetic field
- auxiliary coil
- deflection yoke
- deflection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、テレビジョン受像機等
に用いられる偏向ヨークに関する。
【０００２】
【従来の技術】近年、偏向ヨークにおける上下歪補正に
はマグネットが使用されている。以下従来の偏向ヨーク
の構成について図４および図５を参照しながら説明す
る。図４は、従来の偏向ヨークのＨコイル部を開口部か
らみた平面図である。図中の１は水平枠、２は水平コイ
ルを示している。図５は歪補正を行なうためのマグネッ
トを用いた偏向ヨークを表している。図中の７は小カバ
ー、８はコア、９は大カバー、１０はマグネットであ
る。
【０００３】以上の各構成要素よりなる偏向ヨークにつ
いて、以下その動作について説明する。図６に示すよう
にマグネット１０が作る磁界による力１１の上下方向の
成分１２により、上下歪の補正が可能となる。
【０００４】
【発明が解決しようとする課題】しかしながら前記の従
来の構成では、マグネット１０の着磁によって磁界分布
が違なったり力１１の左右方向の力１３があるので、歪
のバラツキが生じたり、マグネット１０の影響によって
ＹH （コンバーゼンス）などのバラツキが生じる。
【０００５】本発明は前記従来の問題点を解決するもの
で、前記問題のあるマグネットを使用せずに歪補正を行
なうことができる偏向ヨークを提供することを目的とし
ている。
【０００６】
【課題を解決するための手段】この目的を達成するため
に本発明の偏向ヨークは、陰極線管の電子ビームを偏向
するための偏向磁界を発生させる水平偏向コイル、垂直
偏向コイル、フェライトコアと、ネック部と開口部とを
有する前記水平偏向コイルの一部により形成された補助
コイルを有する偏向ヨークであって、前記補助コイルは
導線が交差することなく、前記ネック部を起点とし、前
記ネック部から前記開口部までの間の２／３までをまっ
すぐに巻線し、残り１／３で円弧部の電流が前記水平偏
向コイルの電流と逆向きに流れるように扇形に巻線し、
再度前記ネック部まで前記まっすぐな導線に平行に巻線
して形成され、前記補助コイルにおいて、前記補助コイ
ルのまっすぐに巻線した部分は２本の導線によって作ら
れる磁界がキャンセルされ、前記水平偏向コイルの電流
と逆向きに電流が流れる扇形の円弧部分の両端部をガル
歪のピーク点に対応するように配置することにより、前
記補助コイルによって作られる磁界がガル歪のふくらみ
部をおさえるように作用し、上下歪補正をすることを特
徴とする。
【０００７】
【作用】本発明は上記構成によって、補助コイルによっ
て作られる磁界がガル歪のふくらみ部に力を加えるよう
に作用し、ガル歪のふくらみ部を改善することとなる。
【０００８】
【実施例】以下、本発明の一実施例について図１〜図３
を参照しながら説明する。図１は本発明の一実施例の偏
向ヨークの水平コイル部の平面図である。図２にはガル
歪を示し、そのＣ，Ｄは歪のピーク点である。この歪ピ
ーク点Ｃ，Ｄのふくらみ部のビームをおさえるために
は、上部では下向き、下部では上向きの力が必要とな
る。この力を得るために本実施例では図１に示す補助コ
イル３を用いる。なお、図中の１は水平枠、２は水平コ
イルである。
【０００９】この補助コイル３の原理を図３に示す。図
１に示すように補助コイル３に電流を流すことにより磁
界５が得られる。よってガル歪のふくらみ部をおさえる
ための力６を得ることができる。ここで前記補助コイル
３の巻線は、図１に示すように偏向ヨークにおけるネッ
ク部イから開口部ロまでの２／３までを２本の導線によ
って作られる磁界がキャンセルするように平行に巻線す
る。また残り１／３では扇形に巻線され、その両外側点
Ａ，Ｂがガル歪４のピーク点Ｃ，Ｄにくるように配置す
る。
【００１０】このように本実施例の偏向ヨークは補助コ
イル３によってガル歪を補正でき、すなわち、問題を生
じるマグネットを使用せずに、所期の目的を達成でき
る。
【００１１】
【発明の効果】以上の実施例の説明より明らかなよう
に、本発明は水平枠に補正コイルを設け、この補正コイ
ルによって作られる磁界により、ガル歪のふくらみ部を
おさえる力を加えるので、ガル歪が補正された優れた偏
向ヨークを提供できる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke used for a television receiver or the like. 2. Description of the Related Art In recent years, magnets have been used for vertical distortion correction in a deflection yoke. Hereinafter, the configuration of the conventional deflection yoke will be described with reference to FIGS. FIG. 4 is a plan view of an H coil portion of a conventional deflection yoke as viewed from an opening. In the figure, 1 indicates a horizontal frame and 2 indicates a horizontal coil. FIG. 5 shows a deflection yoke using a magnet for performing distortion correction. In the figure, 7 is a small cover, 8 is a core, 9 is a large cover, and 10 is a magnet. The operation of the deflection yoke composed of the above components will be described below. As shown in FIG. 6, vertical distortion 12 can be corrected by a vertical component 12 of a force 11 generated by a magnetic field generated by the magnet 10. [0004] However, in the above-described conventional configuration, the magnetic field distribution is different due to the magnetization of the magnet 10 or the force 13 in the left-right direction of the force 11 causes variations in distortion. In addition, variations such as Y H (convergence) occur due to the influence of the magnet 10. An object of the present invention is to provide a deflection yoke capable of performing distortion correction without using a problematic magnet. In order to achieve this object, a deflection yoke according to the present invention comprises a horizontal deflection coil, a vertical deflection coil, and a ferrite for generating a deflection magnetic field for deflecting an electron beam of a cathode ray tube. Core, neck and opening
Wherein a deflection yoke having an auxiliary coil which is formed by a portion of the horizontal deflection coil, the auxiliary coil without wire intersect, as a starting point the neck, before having
Serial to wait <br/> immediately winding up 2/3 of between neck portion to the opening, so that the current of the arc portion in the remaining 1/3 flowing through the current in the opposite direction from the horizontal deflection coil Wound in a fan shape,
It is formed in parallel to the winding to the straight lead again to the neck portion, in the auxiliary coil, the auxiliary carp
The magnetic field created by the two conductors is canceled in the straight-wound portion of the coil, and both ends of the sector-shaped arc portion in which the current flows in the opposite direction to the current of the horizontal deflection coil correspond to the peak point of the gull distortion. With this arrangement, the magnetic field generated by the auxiliary coil acts so as to suppress the bulge portion of the galling , thereby performing vertical distortion correction. According to the present invention, the magnetic field generated by the auxiliary coil acts so as to apply a force to the bulge portion of the gull strain, thereby improving the bulge portion of the gull strain. FIG. 1 to FIG. 3 show an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 is a plan view of a horizontal coil portion of a deflection yoke according to one embodiment of the present invention. FIG. 2 shows the gull distortion, and C and D are peak points of the distortion. In order to suppress the beam at the bulge portion of the strain peak points C and D, an upward force is required at the upper portion and an upward force is required at the lower portion. In this embodiment, the auxiliary coil 3 shown in FIG. 1 is used to obtain this force. In the drawings, reference numeral 1 denotes a horizontal frame, and 2 denotes a horizontal coil. FIG. 3 shows the principle of the auxiliary coil 3. As shown in FIG. 1, a magnetic field 5 is obtained by passing a current through the auxiliary coil 3. Therefore, the force 6 for suppressing the bulge portion of the galling can be obtained. Here, as shown in FIG. 1, the winding of the auxiliary coil 3 is wound in parallel so as to cancel the magnetic field generated by the two conductors from the neck part A to the opening part B of the deflection yoke. Line. The remaining 1/3 is wound in a fan shape, and is arranged such that both outer points A and B are located at the peak points C and D of the galling distortion 4. As described above, the deflection yoke of the present embodiment can correct the galling by the auxiliary coil 3, that is, the intended purpose can be achieved without using a magnet which causes a problem. As is apparent from the above description of the embodiment, the present invention provides a correction coil on a horizontal frame, and applies a force to suppress the bulge portion of the galling by the magnetic field generated by the correction coil. Therefore, it is possible to provide an excellent deflection yoke in which the galling is corrected.
【図面の簡単な説明】
【図１】本発明の一実施例の偏向ヨークのＨコイル部の
平面断面図
【図２】ガル歪の説明図
【図３】補助コイルによる磁界と力の向きの説明図
【図４】従来の偏向ヨークのＨコイル部の平面断面図
【図５】マグネットを用いた従来の偏向ヨークの斜視図
【図６】同偏向ヨークにおけるマグネットによる磁界と
力の向きの説明図
【符号の説明】
１ 水平枠
２ 水平コイル
３ 補助コイル
４ ガル歪
５ 補助コイルによって作られる磁界
６ 補助コイルによって得られる力BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional plan view of an H coil portion of a deflection yoke according to one embodiment of the present invention. FIG. 2 is an explanatory diagram of galvanic distortion. FIG. FIG. 4 is a cross-sectional plan view of an H coil portion of a conventional deflection yoke. FIG. 5 is a perspective view of a conventional deflection yoke using a magnet. FIG. 6 is a diagram illustrating directions of a magnetic field and a force by a magnet in the deflection yoke. Figure [Description of Signs] 1 Horizontal frame 2 Horizontal coil 3 Auxiliary coil 4 Galling 5 Magnetic field created by auxiliary coil 6 Force obtained by auxiliary coil
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01J 29/76 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) H01J 29/76
Claims (1)
偏向磁界を発生させる水平偏向コイル、垂直偏向コイ
ル、フェライトコアと、ネック部と開口部とを有する前
記水平偏向コイルの一部により形成された補助コイルを
有する偏向ヨークであって、 前記補助コイルは導線が交差することなく、前記ネック
部を起点とし、前記ネック部から前記開口部までの間の
２／３までをまっすぐに巻線し、残り１／３で円弧部の
電流が前記水平偏向コイルの電流と逆向きに流れるよう
に扇形に巻線し、再度前記ネック部まで前記まっすぐな
導線に平行に巻線して形成され、 前記補助コイルにおいて、前記補助コイルのまっすぐに
巻線した部分は２本の導線によって作られる磁界がキャ
ンセルされ、前記水平偏向コイルの電流と逆向きに電流
が流れる扇形の円弧部分の両端部をガル歪のピーク点に
対応するように配置することにより、前記補助コイルに
よって作られる磁界がガル歪のふくらみ部をおさえるよ
うに作用し、上下歪補正をすることを特徴とする偏向ヨ
ーク。(57) [Claim 1] Before having a horizontal deflection coil, a vertical deflection coil, a ferrite core for generating a deflection magnetic field for deflecting an electron beam of a cathode ray tube, a neck portion and an opening portion. <br/> Symbol a deflection yoke having an auxiliary coil which is formed by a portion of the horizontal deflection coil, the auxiliary coil without wire intersects, the neck portion as a starting point, the opening from the neck portion and straight winding up 2/3 of until, by winding in a fan shape such that the current of the arc portion in the remaining 1/3 flowing through the current in the opposite direction from the horizontal deflection coil, said again until the neck portion It is formed in parallel to winding a straight conductor, in the auxiliary coil, straight of the auxiliary coil
In the wound portion, the magnetic field created by the two conductors is canceled, and both ends of the sector-shaped arc portion in which the current flows in the opposite direction to the current of the horizontal deflection coil are arranged so as to correspond to the peak point of the gull distortion. Thus, the deflection yoke is characterized in that the magnetic field generated by the auxiliary coil acts to suppress the bulge portion of the galling and corrects vertical distortion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17864093A JP3476216B2 (en) | 1993-07-20 | 1993-07-20 | Deflection yoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17864093A JP3476216B2 (en) | 1993-07-20 | 1993-07-20 | Deflection yoke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0737527A JPH0737527A (en) | 1995-02-07 |
| JP3476216B2 true JP3476216B2 (en) | 2003-12-10 |
Family
ID=16051998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17864093A Expired - Fee Related JP3476216B2 (en) | 1993-07-20 | 1993-07-20 | Deflection yoke |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3476216B2 (en) |
-
1993
- 1993-07-20 JP JP17864093A patent/JP3476216B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0737527A (en) | 1995-02-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |